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A study to assess the capability of subsurface flow wetland systems to remove biochemical oxygen demand...

A study to assess the capability of subsurface flow wetland systems to remove biochemical oxygen demand (BOD) and various other chemical constituents resulted in the accompanying data on x = BOD mass loading and y = BOD mass removal.

x = BOD 30 35 37 38 44 103

y = BOD 26 21 9 31 30 75

a)Obtain the estimated ?0 and ?̂1 coefficients. (4 pts.) Show your calculations.

b)Write the linear regression equation.

c)Calculate the coefficient of determination (?^2)

d)Does there appear to be a useful relationship between BOD mass loading and BOD mass removal? State and test the appropriate hypothesis. Use ?=0. 05.

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orchestra answered 2 years ago
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